2. 计算机
  3. (71 ) is the sending and receiving of the messages by computer. It is a fast, low-cost way of communicating worldwide.

(71 ) is the sending and receiving of the messages by computer. It is a fast, low-cost way of communicating worldwide.

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问题 (71 ) is the sending and receiving of the messages by computer. It is a fast, low-cost way of communicating worldwide.
选项 A、LAN
B、Post office
C、E-Mail
D、Interface
答案C
解析
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